.nycrc.yaml

# Instrument/count all source files, not just the ones obviously imported by
# the test file. Without this, a test suite that exercises all of one source
# file, while never touching a second, will look like it covers everything,
# when really half the source code is ignored.
all: true
cache: false

# only report on files in each package's "src/" directory, not things in
# node_modules/ or helpers in test/
include:
  - "src/**/*.js"

# nyc/istanbul gets coverage data by injecting code into each source file.
# This injected code exposes the coverage counters by setting properties on a
# shared mutable property of the global object. The default approach gets the
# global by using `new Function("return this")()`, which doesn't work after
# SES tames Function (so 'this' is undefined).
#
# We use a patched version of nyc which accepts these three options and
# passes them through to istanbul. `coverageGlobalScopeFunc: false` makes it
# use `X` instead of `new Function("return X")()`, and `coverageGlobalScope:
# globalThis` changes X from `this` to `globalThis`. We must also provide
# 'coverageVariable', because for some reason it doesn't have a default
# (which may be a bug in my patched version of nyc).

coverageGlobalScopeFunc: false
coverageGlobalScope: globalThis
coverageVariable: __coverage__